High severity7.8NVD Advisory· Published Mar 25, 2026· Updated Apr 24, 2026
CVE-2026-23391
CVE-2026-23391
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: xt_CT: drop pending enqueued packets on template removal
Templates refer to objects that can go away while packets are sitting in nfqueue refer to:
- helper, this can be an issue on module removal.
- timeout policy, nfnetlink_cttimeout might remove it.
The use of templates with zone and event cache filter are safe, since this just copies values.
Flush these enqueued packets in case the template rule gets removed.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=3.4.1,<5.10.253
- cpe:2.3:o:linux:linux_kernel:3.4:-:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/19a230dec6bb8928e3f96387f9085cf2c79bcef9nvdPatch
- git.kernel.org/stable/c/55445134d42b84cb0a272e42c98d233ca65eca83nvdPatch
- git.kernel.org/stable/c/63b8097cea1923fe82cd598068d0796da8c015ecnvdPatch
- git.kernel.org/stable/c/777d02efe3d630cca4c1b63962cec17c57711325nvdPatch
- git.kernel.org/stable/c/cb549925875fa06dd155e49db4ac2c5044c30f9cnvdPatch
- git.kernel.org/stable/c/cc57506dd66555899560b9c0f24e813f034e12ecnvdPatch
- git.kernel.org/stable/c/d2d0bae0c9a2a17b6990a2966f5cdce0813d6256nvdPatch
- git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96bnvdPatch
News mentions
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